2 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 59fcd24b1468..ee6c26d142c3 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -167,6 +167,7 @@ struct dentry_operations {
         void (*d_release)(struct dentry *);
         void (*d_iput)(struct dentry *, struct inode *);
         char *(*d_dname)(struct dentry *, char *, int);
+        struct vfsmount *(*d_automount)(struct path *);
 } ____cacheline_aligned;
 
 /*
@@ -205,13 +206,17 @@ struct dentry_operations {
 
 #define DCACHE_CANT_MOUNT       0x0100
 #define DCACHE_GENOCIDE         0x0200
-#define DCACHE_MOUNTED          0x0400  /* is a mountpoint */
 
 #define DCACHE_OP_HASH          0x1000
 #define DCACHE_OP_COMPARE       0x2000
 #define DCACHE_OP_REVALIDATE    0x4000
 #define DCACHE_OP_DELETE        0x8000
 
+#define DCACHE_MOUNTED          0x10000 /* is a mountpoint */
+#define DCACHE_NEED_AUTOMOUNT   0x20000 /* handle automount on this dir */
+#define DCACHE_MANAGED_DENTRY \
+        (DCACHE_MOUNTED|DCACHE_NEED_AUTOMOUNT)
+
 extern seqlock_t rename_lock;
 
 static inline int dname_external(struct dentry *dentry)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3984f2358d1f..4c00ed53be8f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -242,6 +242,7 @@ struct inodes_stat_t {
 #define S_SWAPFILE      256     /* Do not truncate: swapon got its bmaps */
 #define S_PRIVATE       512     /* Inode is fs-internal */
 #define S_IMA           1024    /* Inode has an associated IMA struct */
+#define S_AUTOMOUNT     2048    /* Automount/referral quasi-directory */
 
 /*
  * Note that nosuid etc flags are inode-specific: setting some file-system
@@ -277,6 +278,7 @@ struct inodes_stat_t {
 #define IS_SWAPFILE(inode)      ((inode)->i_flags & S_SWAPFILE)
 #define IS_PRIVATE(inode)       ((inode)->i_flags & S_PRIVATE)
 #define IS_IMA(inode)           ((inode)->i_flags & S_IMA)
+#define IS_AUTOMOUNT(inode)     ((inode)->i_flags & S_AUTOMOUNT)
 
 /* the read-only stuff doesn't really belong here, but any other place is
    probably as bad and I don't want to create yet another include file. */